How to disable browser back button of a particular child page (Master Page)

Question

I have a problem to disable a browser back button of a particular child page(Not all child pages of a master page).
No problem when i use in a separate page. I may use history.forward script to onload property of a body tag in a page.
but now i m using master page. that's why i dont know to implement the rule. Could you help me regarding this.

Advance thanks

Bechir Bejaoui · Answer

This is not the best solution but it can do the job define a class that contains a static method that returns a boolean the class must be visible by both the master page and the child one. once the define a boolean in the child page that recives the returned object from that class and set its value from within the master page. It's dummy I know but it works